What other foods besides celery are negative calorie foods?
Cucumbers with the skin on. Any diet soda like Diet Rite or Diet coke, because its zero calories, but your body still has to digest the food coloring in it. Sugar free gum. Celery stalks, celery. Protein and fiber is harder for your body to digest, there fore you feel full for a longer period of time, and it takes your body more calories to digest it and well, the more calories you burn the faster your metabolism. And it can also speed up your digesting process if you start eating it a lot, making food more capable of running through you faster.